Mahabharata 6.79.5

गङ्गायाः सुरनद्या वै स्वादुभूतं यथोदकम्महोदधिगुणाभ्यासाल्लवणत्वं निगच्छति

gaṅgāyāḥ suranadyā vai svādubhūtaṃ yathodakammahodadhiguṇābhyāsāllavaṇatvaṃ nigacchati

Our plain-language meaning of this verse is waiting for scholar review.